The well seal can provide a more permanent, sealed mounting solution for your flojak PVC or Stainless pump series. The upper-section of your FloJak is inserted, through the well-seal during assembly. When fully inserted the hanging bracket (included with your pump) will simply rest on top of the well seal, and serves as the mounting bracket for MiniJak or PowerJak Pump Lever attachments. When thinking through clearances in your casing for the pump, keep in mind that the hole for your pump is in the center of the well-seal. Once installed, the well-seal will insert into your casing until the round top-plate sits on top of the casing. After it is tightened in place the seal will grip the FloJak upper while also gripping the inside of your well casing.How Do They Work?Well-seals are designed with three layers. The top and bottom layers are thick round plates that compress the hard rubber in the middle, when the 4 large bolts are tightened. When squeezed, the rubber section expands tightly against the inside of the casing while also gripping the upper housing of your FloJak, just below the metal hanging bracket. The extra hole may be plugged or used for venting to reduce vacuum as the water is being pumped out of your well.The 4" model has a "fit" range of 4.0"-4.25" so that it can accomodate a variety of well-casing inside diameters. Color may vary.
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